Bone-Conduction Microphone Wakeup Test Fixture With Vibration Exciter
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wake-up test devices for intelligent voice equipment using bone conduction microphones are unable to detect vibration signals, leading to inaccuracies in evaluating the wake-up function.
Innovation Solution
A wake-up test device with a fixed frame and clamping assemblies that allow for the attachment of a bone conduction microphone to a vibration exciter, enabling the detection of vibration signals and accurate evaluation of the wake-up function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an artificial mouth is used to play wake-up command, then the test device can wake up conventional voice equipment, but it cannot pick up vibration signals for bone conduction microphone equipment
Solution Approach 1:
The patent introduces a vibration exciter as an intermediary device that converts acoustic signals into mechanical vibrations. This mediator enables the transmission of wake-up commands through bone conduction by transforming the artificial mouth's acoustic output into vibrations that can be directly transmitted through the test object, thus solving the incompatibility between conventional acoustic testing and bone conduction microphones.
Solution Approach 2:
The patent replaces the acoustic field (sound waves from artificial mouth) with a mechanical vibration field (vibrations from the vibration exciter). This substitution allows the testing system to directly generate mechanical vibrations suitable for bone conduction microphone testing, eliminating the limitation of acoustic signal detection and enabling precise vibration signal measurement.
2Object-affected harmful factors
If bone conduction microphone does not directly contact the vibratile object, then it avoids direct contact contamination, but it cannot pick up vibration signals for wake-up operation
Solution Approach 1:
The vibration exciter serves as a mediator that transmits vibrations through the mounting member to the bone conduction microphone without requiring direct contact between the microphone and the vibratile object. This intermediary transmission path maintains the non-contact advantage while enabling reliable vibration signal reception for wake-up operations.
Solution Approach 2:
The patent divides the vibration transmission path into separate functional components: the vibration exciter generates vibrations, the mounting member transmits them, and the bone conduction microphone receives them. This segmentation allows each component to perform its function optimally while maintaining the non-contact benefit and ensuring reliable wake-up function testing.
3Device complexity
If conventional test device is used, then the structure is simple, but it cannot accurately evaluate wake-up function of bone conduction microphone equipment
Solution Approach 1:
The vibration exciter is introduced as a specialized intermediary component that bridges the gap between conventional acoustic testing and bone conduction microphone testing. While it adds a component to the system, it enables accurate vibration signal generation and transmission, significantly improving wake-up test accuracy for bone conduction equipment.
Solution Approach 2:
The test device is designed with universal functionality to accommodate both conventional voice equipment and bone conduction microphone equipment. The vibration exciter and mounting member configuration allows the same device to test different types of microphones, making the added complexity worthwhile by achieving multi-functionality and accurate evaluation across different equipment types.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively transfers vibration from the bone conduction microphone to the vibration exciter, allowing for accurate detection of vibration signals and reducing errors in the wake-up test.
Implementation Method 1
The device effectively transfers vibration from the bone conduction microphone to the vibration exciter, allowing for accurate detection of vibration signals
Data Source
AI summary
A wake-up test device for intelligent voice equipment is taught herein. The wake-up test device includes a fixed frame. The wake-up test device further includes a first clamping assembly arranged on the fixed frame. The wake-up test device further includes a second clamping assembly arranged on the fixed frame. The first clamping assembly and the second clamping assembly can be brought to be close to or far away from each other. The wake-up test device further includes a vibration exciter arranged on the first clamping assembly or the second clamping assembly. An object to be tested is placed on the vibration exciter, the first clamping assembly and the second clamping assembly are brought to be close to each other and fix the object to be tested on the vibration exciter, so that the object to be tested attaches to the vibration exciter.